420743237 has 4 divisors (see below), whose sum is σ = 421693440. Its totient is φ = 419793036.

The previous prime is 420743227. The next prime is 420743269. The reversal of 420743237 is 732347024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420743237 - 2⁴ = 420743221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420743227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 474437 + ... + 475322.

It is an arithmetic number, because the mean of its divisors is an integer number (105423360).

Almost surely, 2^420743237 is an apocalyptic number.

It is an amenable number.

420743237 is a deficient number, since it is larger than the sum of its proper divisors (950203).

420743237 is an equidigital number, since it uses as much as digits as its factorization.

420743237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950202.

The product of its (nonzero) digits is 28224, while the sum is 32.

The square root of 420743237 is about 20512.0266429234. The cubic root of 420743237 is about 749.3287249954.

The spelling of 420743237 in words is "four hundred twenty million, seven hundred forty-three thousand, two hundred thirty-seven".